The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

World's largest herd of white deer populate a former U.S. Army depot.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

These expertly crafted, scientifically accurate glass sea creatures were once an international phenomenon.

Pluto is still considered a planet in Ithaca, New York.

The library of every book lover's dreams.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

A self-built castle made by a mysterious man.